A shrub turning blackish when dry, entirely glabrous; branches slightly angular, leaf-scars conspicuous; leaves scattered, linear-subulate, 5-6 lin. long, plano-convex, smooth; flowers terminal, solitary or more frequently geminate, surrounded by a cluster of ordinary leaves; calyx glabrous, 3-4 lin. long; tube dilated above; lobes acute, nearly as long as the tube.
Erect or spreading shrublet to 50 cm. Leaves scattered, linear-subulate; involucral leaves slightly wider. Flowers paired at branch tips, yellow, hypanthium funnel-shaped, glabrous; petaloid floral scales 4, membranous, pale yellow.